[GHC] #9619: HPC Code Coverage complains when two exactly the same mix files are on the path

[GHC]

#9619: HPC Code Coverage complains when two exactly the same mix files are on the
path
-------------------------------------+-------------------------------------
        Reporter:  Kasper            |                   Owner:
            Type:  bug               |                  Status:  patch
        Priority:  lowest            |               Milestone:  7.12.1
       Component:  Code Coverage     |                 Version:  7.8.3
      Resolution:                    |                Keywords:
Operating System:  Linux             |            Architecture:  x86_64
 Type of failure:  Incorrect result  |  (amd64)
  at runtime                         |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:  Phab:D704
-------------------------------------+-------------------------------------
Changes (by thomie):

 * status:  infoneeded => patch
 * differential:   => Phab:D704
 * milestone:   => 7.12.1


Comment:

 A potential fix can be found here (pending validation):
 https://github.com/ghc/packages-hpc/tree/wip/T9619

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9619#comment:5>
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